LDEPPF

LDEPPF (LET)

Library Function

Compute the standard form of the log double exponential (also known as the log Laplace distribution) percent point function.

The standard form of the log double exponential distribution has the following percent point function:




where LDECDF is the cumulative distribution function of the log double exponential distribution.

LET <y> = LDEPPF(<p>,<alpha>)           <SUBSET/EXCEPT/FOR qualification>
where <p> is a variable, a number, or a parameter;
          <y> is a variable or a parameter (depending on what <p> is) where the computed log double exponential ppf value is saved;
          <alpha> is a variable, a number, or a parameter that specifies the shape parameter;
and where the <SUBSET/EXCEPT/FOR qualification> is optional.

LET A = LDEPPF(0.9,2)
LET X2 = LDEPPF(P1,0.5)

None

None

LDECDF	= Compute the double exponential cumulative distribution function.
LDEPDF	= Compute the double exponential probability density function.
DEXPDF	= Compute the double exponential cumulative distribution function.
EXPPDF	= Compute the exponential cumulative distribution function.
WEIPDF	= Compute the Weibull cumulative distribution function.
EV1PDF	= Compute the extreme value type I cumulative distribution function.
CHSPDF	= Compute the chi-square cumulative distribution function.

"Continuous Univariate Distributions: Volume 2", 2nd Ed., Johnson, Kotz, and Balakrishnan, John Wiley, 1994, page 192.

Distributional Modeling

2001/10

    MULTIPLOT 2 2 
    MULTIPLOT CORNER COORDINATES 5 5 95 95 
    TITLE AUTOMATIC 
    PLOT LDEPPF(P,0.5)  FOR P = 0.01 0.01 0.99 
    PLOT LDEPPF(P,1)  FOR P = 0.01 0.01 0.99 
    PLOT LDEPPF(P,2)  FOR P = 0.01 0.01 0.99 
    PLOT LDEPPF(P,5)  FOR P = 0.01 0.01 0.99 
    END OF MULTIPLOT